blue mold
noun
: any of various fungi (genera Penicillium and Peronospora) that produce blue or blue-green surface growths
Examples of blue mold in a Sentence
Recent Examples on the Web
One biggie is a blue mold called Penicillium expansum, which is best known for infecting apples but also attacks pears, cherries, peaches and other fruit.
—
Brad Reisfeld,
The Conversation,
28 Oct. 2025
Most appeared to show blue mold in the cheese that comes with the meal.
—
Ben Kesslen,
Quartz,
23 Oct. 2024
Cuba was estimated to have lost 90 percent of its tobacco production in 1980 because of an outbreak of blue mold.
—
Nicholas Foulkes,
Robb Report,
15 Apr. 2023
Creamy on the inside and flaky on the exterior, this goat’s milk cheese pyramid gets a thin coating of blue mold halfway through its four-week aging period, giving it a very mild tang that lets the grassy flavors of the goat’s milk shine through.
—
Washington Post,
8 Sep. 2021
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Brad Reisfeld,
The Conversation,
28 Oct. 2025
Most appeared to show blue mold in the cheese that comes with the meal.
—
Ben Kesslen,
Quartz,
23 Oct. 2024
Cuba was estimated to have lost 90 percent of its tobacco production in 1980 because of an outbreak of blue mold.
—
Nicholas Foulkes,
Robb Report,
15 Apr. 2023
Creamy on the inside and flaky on the exterior, this goat’s milk cheese pyramid gets a thin coating of blue mold halfway through its four-week aging period, giving it a very mild tang that lets the grassy flavors of the goat’s milk shine through.
—
Washington Post,
8 Sep. 2021
Cite this Entry
“Blue mold.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blue%20mold. Accessed 5 Jul. 2026.
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